A Leg Amputation, a Daughter With Power of Attorney, and One Sentence From the Patient
Mr. K., 78, was admitted with a gangrenous right foot and sepsis. He speaks Cantonese and has limited English; his daughter, Mei, holds his durable power of attorney for health care and has interpreted for him at every appointment for years. Mr. K. has moderate dementia documented in his chart; on good days he follows conversation and knows his family.
The vascular surgeon recommends below-knee amputation within 24 hours. Mei says, 'Do everything, he would want to live.' His son, who has just arrived from out of town, says their father always said he would never 'lose a leg.'
This morning, when the nurse was repositioning him, Mr. K. said clearly in English, 'I don't want to lose my leg.' He then became tearful and stopped speaking. His daughter was not in the room. The consent form is on the desk, and the OR has a slot at 0600.
1. How would you determine whether Mr. K. can make this decision himself, and what would you do first?
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A dementia diagnosis does not answer the question; capacity is decision-specific and assessed, not assumed.
Capacity requires four elements:
- Understanding - can he explain what a below-knee amputation is, why it is being offered, and the alternative?
- Appreciation - can he say what it means for him, that without it the infection may kill him?
- Reasoning - can he weigh the options using his own values?
- Expressing a choice - consistently, over time.
Practical steps tonight:
- Use a qualified medical interpreter, not Mei. She has a conflict of interest in this decision, and the law and good practice both require a trained interpreter for a consent conversation. Many hospitals have phone or video interpreters within minutes; this is a 0600 deadline, not an emergency.
- Assess at his best moment - after analgesia, after sleep, with hearing aids and glasses on, at a time when he is most alert.
- Ask open questions, not yes/no. 'Tell me what you understand about your foot.' 'What do you think will happen if we do not take the leg?' Use teach-back.
- Explore the sentence he already gave. 'I don't want to lose my leg' may be informed refusal, but it may equally be fear, a wish not to be a burden, or a misunderstanding that amputation means death. One sentence is not a decision; it is a starting point for a real conversation.
Document what you asked, what he said in his own words (with translation noted), and when. Do not put the consent form in front of him before this assessment happens.
2. If Mr. K. is found to lack capacity for this decision, how do the daughter's authority and the family disagreement factor into the decision? Explain the standard the surrogate must apply.
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A power of attorney is activated by incapacity, and even then the surrogate must apply the patient's values, not their own.
- If Mr. K. has capacity, his decision controls - even if Mei disagrees, and even if the surgeon disagrees. Mei cannot consent to override a capable patient who declines. That is the core of autonomy and it is also the law in most jurisdictions.
- If Mr. K. lacks capacity, Mei becomes the decision-maker under the durable power of attorney, which takes precedence over the son, who holds no legal authority here.
- The standard is substituted judgement: what would Mr. K. have chosen, given his values? Not 'what is in his best interests as I see it,' and not 'what keeps him alive longest.' Mei's statement 'he would want to live' is her interpretation; the son's report that he never wanted to lose a leg is also evidence of his values. Both should be explored rather than one dismissed.
- Conflict is expected and is not resolved by a vote. Convene a family meeting with the attending, a qualified interpreter, and the facility's ethics consultation service. Aim for consensus, but the DPOA is the legal decision-maker if consensus fails.
- Escalate further if needed: some states require a second physician opinion confirming incapacity before a surrogate decides, and disputed decisions may go to an ethics committee or, rarely, to guardianship.
- Do not let the 0600 OR slot drive the process. A short delay with a documented capacity assessment is defensible; an amputation authorized by the wrong person is not.
3. What exactly do you document, and how do you handle Mei's role in the conversation?
Read the worked answer
Documentation here is the difference between a defensible decision and an allegation of coercion or neglect.
Record:
- The capacity assessment: what was asked, what Mr. K. demonstrated, and by whom the assessment was performed (this is a clinician judgement, but your observations feed it).
- His exact words, marked as translated, with the interpreter's name or ID number and the language used. 'I don't want to lose my leg' recorded verbatim carries very different weight from 'patient declined.'
- The context: time of day, analgesia given, hearing aids, who was present, his state - tearful, then stopped speaking.
- The interpreter used and that Mei was not used for the consent conversation.
- The family meeting: who attended, what each person said, what was agreed, and any unresolved disagreement.
- The escalation: who was notified (attending, ethics, palliative care) and the response.
Handling Mei:
- Do not cut her out. She has been his voice for years, she knows his values, and excluding her will damage trust and the family's ability to care for him afterwards.
- Separate the roles: she can be a daughter and a source of information during the conversation, but the capacity assessment and the consent discussion run through a qualified interpreter.
- Acknowledge her position explicitly: 'You have been his advocate for years, and we need what you know. We also need to hear from him directly.'
- Explore her 'do everything' statement. It may be grief and fear of losing him, not a considered instruction. Bring palliative care in early - amputation and comfort-focused care are not the only two options, and the family may not know what rehabilitation looks like afterwards.